GH-2235 added note on jackson dependencies

Signed-off-by: Bart Hanssens <bart.hanssens@bosa.fgov.be>

site/content/release-notes/3.3.0.md

@@ -17,6 +17,9 @@ For a complete overview, see [all issues fixed in 3.3.0](https://github.com/ecli
 
 This release is binary compatible with previous releases. 
 
+RDF4J 3.1.x and 3.2.x implicitly included the jackson-core, jackson-databind and jackson-annotations dependencies when using the rdf4j-rio-api maven artifact. In version 3.3.0, these dependencies are explicitly excluded.
+Projects relying on this unintended behavior should check if they need to add these jackson dependencies to their build files.  
+
 ## Acknowledgements
 
 The following contributors made this release possible (in alphabetical order): Bart Hanssens, Håvard M. Ottestad, Jeen Broekstra, [TODO]